Math, asked by rahulgowdarahulgowda, 7 months ago

solve the following ...
1) Find the sum of 4+12+20+- - - - - - - - - - + 100​

Answers

Answered by Anonymous
3

Answer:

676

Step-by-step explanation:

(4)+ (4+8) + (4+8+8) ............+(4+8+8+8+8+8+8+8+8+8+8+8+8)

[4+8(0)] + [4+8(1)]+[4+8(2)].............+[4+8(12)]

So the total terms are = 13

So,

Sum = 4(13) +8(0+1+2+3.....+12)

       = 52 + 624 = 676

Please mark it as Brainliest

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